docs: def rm(ctx, cluster_id):
      """Terminate a EMR cluster"""
      session = create_session(ctx.obj['AWS_PROFILE_NAME'])
  
      client = session.client('emr')
      try:
          result = client.describe_cluster(ClusterId=cluster_id)
          target_dns = result['Cluster']['MasterPublicDnsName']
          flag = click.prompt(
              "Are you sure you want to terminate {0}: {1}? [y/Y]".format(
                  cluster_id, target_dns), type=str, default='n')
          if flag.lower() == 'y':
              result = client.terminate_job_flows(JobFlowIds=[cluster_id])
      except ClientError as e:
          click.echo(e, err=True)